A232793 Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{j^4*x(i,j), j=1..4+1} nondecreasing, and column sums sum{i^4*x(i,j), i=1..n+1} nondecreasing

41, 336, 2942, 24520, 183010, 1202234, 6552283, 30323734, 119567288, 429359835, 1473949816, 4955858508, 16292947065, 52136731185, 161006763155, 475381815548, 1338181262613

Offset

1,1

Comments

Column 4 of A232797

Links

Table of n, a(n) for n=1..17.

Example

Some solutions for n=5
..0..0..1..0..0....0..0..0..1..0....0..1..0..0..0....0..1..1..1..0
..0..0..1..1..0....1..1..1..0..1....0..1..0..1..0....0..0..1..0..1
..0..1..1..0..1....1..1..0..1..1....0..0..0..0..1....1..0..1..0..1
..0..0..0..1..1....1..1..0..1..1....0..0..0..1..1....0..1..1..0..1
..1..0..0..1..1....0..0..1..1..1....0..0..0..1..1....1..1..0..1..1
..0..1..1..1..1....1..1..1..1..1....0..0..1..1..1....0..0..1..1..1

Crossrefs

Sequence in context: A222990 A300775 A232857 * A219080 A184060 A300645

Adjacent sequences: A232790 A232791 A232792 * A232794 A232795 A232796

Keyword

nonn

Author

R. H. Hardin, Nov 30 2013

Status

approved